No, you do not need a new W-9 every year. A completed Form W-9 has no expiration date, and the IRS sets no annual renewal requirement. The form you signed for a client three years ago is still valid today, provided the name, taxpayer identification number, and tax classification on it are still accurate. What actually forces a new W-9 is a change in your information or a specific request from the payer, and ignoring those triggers can cost you 24% of every payment in backup withholding.
What a W-9 Actually Certifies
Form W-9, “Request for Taxpayer Identification Number and Certification,” gives the person or company paying you the information they need to report those payments to the IRS.1Internal Revenue Service. About Form W-9, Request for Taxpayer Identification Number and Certification For contractors and freelancers, that reporting usually shows up on a 1099-NEC when a payer sends you $600 or more of nonemployee compensation in a calendar year.2Internal Revenue Service. Instructions for Forms 1099-MISC and 1099-NEC (04/2025)
The W-9 itself doesn’t withhold anything. It certifies your name, your TIN, and your tax classification so the payer can file an accurate information return. Because the certification is tied to facts about you rather than to a tax year, the form stays good as long as those facts hold.
When You Do Need to Submit a New One
The instructions on the W-9 list the situations that make an existing form invalid. Once any of these is true, the old form no longer matches reality, and the payer needs an updated one before they can file correct 1099s.
- A legal name change, whether personal (marriage, divorce, court order) or business (rebranding, merger). The name on the W-9 has to match IRS records.
- A new taxpayer identification number. If you switch from your Social Security Number to an EIN, or receive a new EIN, the old form is out of date.
- A change in entity classification. Moving from sole proprietor to LLC, or from a single-member LLC to an S corporation, changes the classification box the payer relies on.3Internal Revenue Service. Business Name Change
- A change in exempt payee status. If you previously claimed exemption from backup withholding and that no longer applies, you must give updated W-9s to anyone you expect reportable payments from.4Internal Revenue Service. Form W-9 (Rev. March 2024)
A mailing address change is not on this list. You should still tell your clients so your 1099s reach you, but the certification on your existing W-9 stays valid. For a business address change with the IRS itself, use Form 8822-B.
Why Some Clients Ask Every January Anyway
Plenty of accounting departments send W-9 requests to every vendor at the start of each year. That’s an internal policy, not an IRS rule. The payer is the one penalized when a 1099 goes out with the wrong name or TIN, so many companies rebuild their vendor files annually to catch changes their contractors forgot to mention.
You’re expected to cooperate with those requests. Refusing to return a W-9 when a payer asks for one puts you into backup withholding regardless of whether the request was legally required. If nothing has changed, filling out an identical form takes a few minutes and keeps payments flowing.
When the IRS Forces a New W-9: The B Notice
One situation outside the normal triggers requires a fresh W-9 whether you like it or not. When a name-and-TIN combination on a filed 1099 doesn’t match IRS records, the IRS sends the payer a CP2100 or CP2100A notice. The payer then sends you a “B notice” with a blank W-9 attached.5Internal Revenue Service. Backup Withholding “B” Program
A first B notice is fixed by returning a corrected W-9. If a second mismatch happens within three years, you’ll get a second B notice, and this time a new W-9 alone isn’t enough. You have to send the payer a copy of your Social Security card or an IRS Letter 147C confirming your EIN before they can stop withholding.5Internal Revenue Service. Backup Withholding “B” Program
What Happens if You Skip It
If you don’t provide a W-9, provide one with the wrong TIN, or ignore a B notice, the payer is required by law to start backup withholding at 24% of every payment. That money goes straight to the IRS on your behalf, and it applies broadly: 1099-NEC, 1099-MISC, 1099-INT, 1099-DIV, 1099-B, 1099-K, and others.6Internal Revenue Service. Topic No. 307, Backup Withholding
To stop it, give the payer a correctly completed W-9 with a name-and-TIN combination that matches IRS records. The payer has to stop withholding within 30 calendar days of receiving it.7Internal Revenue Service. 5.19.3 Backup Withholding Program The withheld money isn’t gone; it gets credited against your tax bill when you file your return. But until you fix the problem you’re handing over 24% of your gross pay as an interest-free loan to the government.
Penalties on Top of Withholding
The IRS also has direct penalties for W-9 problems. Failing to provide your TIN when required carries a $50 penalty per failure, capped at $100,000 in a calendar year.8GovInfo. 26 U.S.C. 6723 – Failure to Comply With Other Information Reporting Requirements Providing false information to reduce backup withholding runs $500 per false statement.9Office of the Law Revision Counsel. 26 U.S.C. 6682 – False Information With Respect to Withholding
Because the W-9 is signed under penalties of perjury, willfully falsifying it is also a felony under federal law, punishable by fines of up to $100,000 and up to three years in prison.10Office of the Law Revision Counsel. 26 U.S.C. 7206 – Fraud and False Statements The IRS rarely charges anyone criminally over a W-9, but the exposure is real for anyone tempted to use a fake TIN.
If You Don’t Have a TIN Yet
New businesses waiting on an EIN can still respond to a W-9 request. Write “Applied For” in the TIN field, sign the form, and submit it. For interest and dividend payments, you then have 60 days to supply the actual number before backup withholding starts. For everything else, including independent contractor pay, backup withholding begins immediately and continues until you provide the TIN.4Internal Revenue Service. Form W-9 (Rev. March 2024) If you’re in this position, chase down the EIN application. Every payment you receive in the meantime will arrive 24% lighter.